CN100456120C - Focusing method of image capturing device - Google Patents

Focusing method of image capturing device Download PDF

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CN100456120C
CN100456120C CNB2005100984868A CN200510098486A CN100456120C CN 100456120 C CN100456120 C CN 100456120C CN B2005100984868 A CNB2005100984868 A CN B2005100984868A CN 200510098486 A CN200510098486 A CN 200510098486A CN 100456120 C CN100456120 C CN 100456120C
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focusing
picture
steps
focused
file size
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CN1928690A (en
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林宜庆
吴金勋
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Fujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Premier Image Technology Corp
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Abstract

A focusing method for an image capturing device is disclosed, which first determines a first position of a focusing lens corresponding to a maximum contrast value through a focusing procedure. Then, the focusing lens is arranged at different positions, a corresponding focusing picture is shot at each position, and a second position is determined from the different positions according to the corresponding picture file sizes of a plurality of peripheral areas of each focusing picture. Finally, the first position and the second position are compared to generate an adjusting step number so as to adjust the position of the focusing lens. By the method, the problem of resolution unbalance of the image capturing device can be solved, and the overall resolution and efficiency are improved.

Description

The focusing method of image capture unit
Technical field
The present invention relates to a kind of focusing method, particularly a kind of focusing method of image capture unit.
Background technology
Existing digital camera (or digital code camera) is when focusing, be to utilize step motor in the camera lens focus lens to be moved forward and backward (distance that is moved is represented with step number (step)), receive the light of penetrating focus lens by photosensory assembly (as Charged Coupled Device (CCD)), and calculate to focus lens when the diverse location a pairing correlative value (contrast value) or evaluation of estimate by a Digital System Processor (DSP).Fig. 1 be digital camera when focusing, the synoptic diagram of its focusing step number (focus step) and the typical corresponding relation of correlative value.The transverse axis of Fig. 1 is the focusing step number, and its value size is with respect to the reference position (initial point of icon) for focus lens; The longitudinal axis is a correlative value then, is by the sensitive volume calculating gained of Digital System Processor according to photosensory assembly.In Fig. 1, this corresponding relation is shown as a curve with a peak value, and this peak value is the maximum contrast value.Under general situation, the value that this maximum contrast is worth pairing transverse axis is best focusing step number, and camera is taken under this best focusing step number, should obtain optimum resolution.Yet because aforesaid located by prior art is in when focusing, the calculating of its correlative value is only at previously selected regional area in the photosensitive area (sensor area) of photosensory assembly, thereby the maximum contrast value of gained (being the peak value of Fig. 1) can't be represented whole photosensitive area.Therefore, according to the captured image that goes out of the focusing step number of described maximum contrast value correspondence, may have the subregion (as certain on one side or the corner) comparatively fuzzy phenomenon, cause the resolution imbalance of whole image.In this case, described maximum contrast is worth pairing focusing step number, and is just non-" the best " the focusing step number.
Summary of the invention
Fundamental purpose of the present invention is to propose a kind of focusing method, is applicable to image capture unit (as digital camera or digital code camera), can improve the unbalance problem of its resolution, promotes whole resolution and usefulness.Another object of the present invention is to propose a kind of method of adjustment of camera lens focusing step number, is applicable to digital camera or digital code camera, its camera lens can be adjusted to best focusing step number, the whole resolution when improving the camera lens focusing.
For reaching aforementioned purpose, image capture unit focusing method of the present invention is to comprise the following step:
Carry out a focusing program to determine a described primary importance to focus lens, wherein said primary importance is corresponding to a maximum contrast value;
With described focus lens is set in a plurality of diverse locations respectively, respectively takes the focusing picture of a correspondence in each diverse location; Corresponding focusing picture has been divided a central area and a plurality of outer peripheral areas at least; When taking the focusing picture, be that object is taken with a sample figure; Described sample figure cooperates the dividing mode of the picture of focusing and designs the corresponding diagram file size unanimity of zoning to guarantee; Described diverse location comprises primary importance, and the interval step number of adjacent position is identical;
The maximal value of corresponding diagram file size according to the central area of all focusing pictures, the focusing picture that will satisfy " the corresponding diagram file size of its central area is higher than a critical value with respect to described peaked percent value " remains, the corresponding diagram file size of a plurality of outer peripheral areas of the picture of respectively focusing that foundation is kept determines a second place from described these diverse locations;
More described first with the described second place, adjust step number to produce one; And
Adjust described position according to described adjustment step number to focus lens;
The corresponding diagram file size of the described central area of the pairing described focusing picture of the described second place is not less than described critical value with respect to a described peaked percent value.
On the other hand, camera lens focusing step number method of adjustment of the present invention is to be used for a digital imaging device, and described digital imaging device comprises a pair of focus lens.This method of adjustment comprises the following step:
Carry out a focusing program to determine described one first step number to focus lens, wherein said first step number is corresponding to a maximum contrast value;
With described focus lens is set in a plurality of different step numbers respectively, respectively takes the focusing picture of a correspondence in each different step number; Corresponding focusing picture has been divided a central area and a plurality of outer peripheral areas at least; When taking the focusing picture, be that object is taken with a sample figure; Described sample figure cooperates the dividing mode of focusing picture and designs the corresponding diagram file size unanimity of zoning to guarantee; Described a plurality of different step numbers comprise first step number, and the interval of adjacent step number is identical;
The maximal value of corresponding diagram file size according to the central area of all focusing pictures, the focusing picture that will satisfy " the corresponding diagram file size of its central area is higher than a critical value with respect to described peaked percent value " remains, the corresponding diagram file size of a plurality of outer peripheral areas of the picture of respectively focusing that foundation is kept determines one second step number from described these different step numbers;
More described first with described second step number, adjust step number to produce one; And
Adjust described focusing step number according to described adjustment step number to focus lens;
The corresponding diagram file size of the described central area of the pairing described focusing picture of described second step number is not less than described critical value with respect to a described peaked percent value.
Description of drawings
Fig. 1 be digital still camera when focusing, the synoptic diagram of the typical corresponding relation of its focusing step number and correlative value.
Fig. 2 is the process flow diagram of a preferred embodiment of focusing method of the present invention.
Fig. 3 is among figure two embodiment, the synoptic diagram of the dividing mode of focusing picture.
Fig. 4 is the process flow diagram of a preferred embodiment of camera lens focusing step number method of adjustment of the present invention.
Description of reference numerals:
21～25: the flow process of a preferred embodiment of image capture unit focusing method;
41～45: the flow process of a preferred embodiment of camera lens focusing step number method of adjustment.
Embodiment
Fig. 2 is the process flow diagram of a preferred embodiment of focusing method of the present invention.This focusing method is to be used for image capture unit, for example digital camera or digital code camera.Image capture unit has a camera lens, includes a pair of focus lens, can move forward and backward when focusing, and the size of displacement is to represent with step number.As shown in Figure 2, this flow process comprises the following step:
Step 21: carry out a focusing program with the primary importance of decision to focus lens;
Step 22: will be set in a plurality of diverse locations respectively to focus lens, and respectively take the focusing picture of a correspondence in each diverse location;
Step 23: the corresponding diagram file size of a plurality of outer peripheral areas according to each focusing picture determines the second place from described these diverse locations;
Step 24: compare first and second position, adjust step number to produce one; And
Step 25: according to the position of described adjustment step number adjustment to focus lens.
In the step 21, the focusing program is will focus lens be set in a plurality of diverse locations respectively, and calculates the pairing correlative value in each position.Calculate in the correlative value of gained at these, the pairing position of the maximum is primary importance.
Step 22 and 23 is to carry out calibration (calibration) program, to determine the optimum position (be the second place) of calibration back to focus lens.Take in this optimum position, can obtain best whole resolution, avoid unbalance.Described calibration procedure is to carry out according to the principle of " resolution of image is directly proportional with the size of its corresponding diagram file ".The File Format of figure shelves can be any industry specification commonly used, as JPEG herein.Step 22 is to be that object is taken with a sample figure (pattern chart) when taking the focusing picture.This sample figure cooperates the dividing mode (described below) of focusing picture and designs, the corresponding diagram file size unanimity of zoning to guarantee, that is under identical shooting condition, zones of different is if area is identical, its corresponding diagram shelves size is also identical.After step 22 was taken the focusing picture at each diverse location, step 23 was promptly analyzed these focusing pictures.Analysis mode is as follows: at first, every focusing picture is divided into nine big or small same area, wherein comprises a central area and eight outer peripheral areas, as shown in Figure 3.Each zone can be considered a sub-pictures, has the figure shelves size of a correspondence.The maximal value of corresponding diagram shelves size according to the central area (being denoted as A) of all focusing pictures, the focusing picture that will satisfy " the corresponding diagram file size of its central area is higher than a critical value with respect to described peaked percent value " remains, and all the other are not considered.Described critical value (as 95%) is an empirical value, can adjust with actual state.
Secondly, four corner outer peripheral areas of every the focusing picture that is just kept (upper left, lower-left, upper right and bottom right are denoted as B, C, D and E in regular turn) are chosen wherein two corresponding diagram shelves sizes for minimum.In one embodiment, calculate the corresponding diagram file size sum that each keeps two outer peripheral areas that picture is selected, and with this be that the pairing position of reservation picture of maximum is the second place.In another embodiment, calculate the poor of each corresponding diagram file size that keeps two outer peripheral areas that picture is selected, and to differ from this be that the pairing position of reservation picture of minimum is the second place.In another embodiment, then calculate respectively each corresponding diagram file size that keeps two outer peripheral areas that picture is selected and with poor.Then, N opens figure shelves focusing picture size and maximum before choosing, and from then on N opens in the focusing picture again, and the difference of choosing corresponding diagram shelves size is minimum, and it keeps the pairing position of picture and is the second place.Wherein, N is an empirical value, can adjust with actual state.
It should be noted that step 23 when analyzing the focusing picture, except the dividing mode of Fig. 3, other dividing mode is also applicable.As long as the focusing picture has been divided a central area and two outer peripheral areas (the neither limit in shape, size and orientation) at least, and the sample figure that matches is arranged, just can utilize aforementioned analysis mode to decide the second place for taking the focusing picture.
In the embodiment of Fig. 2, described these diverse locations of step 22 are to comprise primary importance, and the interval step number of adjacent position is identical.For example, it is the center that described these diverse locations can be selected with the primary importance, front and back each 5 the step scopes, and the adjacent position be spaced apart 1 the step.Owing to can represent with the focusing step number of a correspondence, therefore, behind first and second position of decision, in step 23, can directly calculate the step number gap between the correspondence focusing step number of these two positions, and obtain adjusting step number each position of focus lens.
Through calibration and obtain adjust step number after, in step 24, just can adjust step number and adjust position focus lens according to this, obtain best whole resolution.For example, when follow-up the focusing, after finishing the focusing program (be positioned at position that " in theory " have maximum contrast value to focus lens this moment), will adjust step number to the position correction one of focus lens again, just camera lens can be adjusted to best overall resolution.In one embodiment, be this to be adjusted step number exist in the internal memory of image capture unit, desirablely when being beneficial to follow-up the focusing go out to use.
The size of aforementioned adjustment step number more can change along with the different acquisition parameters of image capture unit.Therefore, in another preferred embodiment of focusing method of the present invention, except step 21 to 25, further choose one or more acquisition parameters, with under the setting value of different acquisition parameters, repeated execution of steps 21 to 24 produces corresponding adjustment step number, and acquisition parameters and the corresponding relation of adjusting step number can be stored in the internal memory of image capture unit.In step 25, can take out corresponding adjustment step number from internal memory according to the setting value of each acquisition parameters of when focusing, adjust position according to this to focus lens.Choosing of acquisition parameters decided on the degree of accuracy that will reach herein.In principle, selected parameter is many more, and the whole resolution of being reached is just good more.In one embodiment, be to choose camera lens hop count and two parameters of shooting distance.
Fig. 4 is the process flow diagram of a preferred embodiment of camera lens focusing step number method of adjustment of the present invention.This method of adjustment is to be used for a digital imaging device, as digital camera or digital code camera.Described digital imaging device has a camera lens, includes a pair of focus lens, can move forward and backward when focusing, and the size of displacement is to represent with step number.Shown in figure four, this flow process comprises the following step:
Step 41: carry out a focusing program with first step number of decision to focus lens, wherein first step number is corresponding to first correlative value;
Step 42: will be set in a plurality of different step numbers respectively to focus lens, and respectively take the focusing picture of a correspondence in each step number;
Step 43: the corresponding diagram file size of a plurality of outer peripheral areas according to each focusing picture determines second step number from described these different step numbers;
Step 44: compare first and second step number, adjust step number to produce one; And
Step 45: according to the focusing step number of described adjustment step number adjustment to focus lens.
In the step 42, described these different step numbers are to comprise first step number, and the interval of adjacent step number is identical.Step 43 is to come the focusing picture of analytical procedure 42 gained in the mode that is similar to Fig. 2 step 23, with according to the corresponding diagram file size of each two outer peripheral areas being selected of focusing picture and or poor, determine second step number.In the step 44, calculate the gap between first and second step number, be the adjustment step number.In one embodiment, be this to be adjusted step number exist in the internal memory of digital imaging device, desirablely when being beneficial to follow-up the focusing go out to use.
In another preferred embodiment of camera lens focusing step number method of adjustment of the present invention, except step 41 to 45, further choose one or more acquisition parameters, with under the setting value of different acquisition parameters, repeated execution of steps 41 to 44, produce corresponding adjustment step number, and acquisition parameters and the corresponding relation of adjusting step number are stored in the internal memory of digital imaging device.In step 45, can take out corresponding adjustment step number from internal memory according to the setting value of each acquisition parameters of when focusing, adjust position according to this to focus lens.In one embodiment, be to choose the camera lens hop count and two parameters of shooting distance are implemented this method of adjustment.
The above is to utilize preferred embodiment to describe the present invention in detail, but not limits the scope of the invention.Generally know this type of skill personage and all can understand, suitably do slightly change and adjustment, will not lose main idea of the present invention place, also do not break away from the spirit and scope of the present invention.

Claims (9)

1.一种影像撷取装置的对焦方法，所述影像撷取装置包含一对焦镜片，其特征在于，所述对焦方法包含下列步骤：1. A focusing method for an image capture device, said image capture device comprising a focusing lens, characterized in that said focusing method comprises the following steps: 进行一对焦程序以决定所述对焦镜片的一第一位置，其中所述第一位置是对应于一最大对比值；performing a focus procedure to determine a first position of the focus lens, wherein the first position corresponds to a maximum contrast value; 将所述对焦镜片分别设定于多个不同位置，于每一不同位置各拍摄一对应的对焦图片；对应对焦图片至少划分有一个中心区域和多个外围区域；在拍摄对焦图片时，以一样本图为对象来拍摄；所述样本图配合对焦图片的划分方式而设计，以确保所划分区域的对应图文件大小一致；所述不同位置包含第一位置，且相邻位置的间隔步数相同；The focusing lens is respectively set in a plurality of different positions, and a corresponding focusing picture is taken at each different position; the corresponding focusing picture is divided into at least one central area and a plurality of peripheral areas; when taking the focusing picture, the same This picture is taken for the object; the sample picture is designed in conjunction with the division method of the focus picture to ensure that the corresponding picture files of the divided areas are of the same size; the different positions include the first position, and the steps between adjacent positions are the same ; 依据所有对焦图片的中心区域的对应图文件大小的最大值，将满足“其中心区域的对应图文件大小相对于所述最大值的百分比值高于一临界值”的对焦图片保留下来，依据所保留的各对焦图片的多个外围区域的对应图文件大小，从所述这些不同位置中决定一第二位置；According to the maximum value of the corresponding image file size of the central area of all focused images, the focused image that satisfies "the percentage value of the corresponding image file size of the central area relative to the maximum value is higher than a critical value" is retained, according to the The corresponding map file sizes of the plurality of peripheral areas of each in-focus picture are reserved, and a second position is determined from the different positions; 比较所述第一与所述第二位置，以产生一调整步数；以及comparing the first and second positions to generate an adjustment step; and 依据所述调整步数调整所述对焦镜片的位置；adjusting the position of the focusing lens according to the number of adjustment steps; 所述第二位置所对应的所述对焦图片的所述中心区域的对应图文件大小相对于所述最大值的一百分比值不低于所述临界值。A percentage value of the corresponding map file size of the central area of the focused picture corresponding to the second position relative to the maximum value is not lower than the critical value. 2.根据权利要求1所述的对焦方法，其特征在于：所述决定第二位置的步骤包含：2. The focusing method according to claim 1, wherein the step of determining the second position comprises: 从每一所保留的对焦图片的所述这些外围区域，选取其中两个的对应图文件大小为最小的；以及From said peripheral regions of each of the retained in-focus images, selecting two of which have the smallest corresponding image file size; and 计算每一所保留的对焦图片被选取的所述两个外围区域的对应图文件大小之和，以所述和为最大的对焦图片对应的位置为第二位置。Calculating the sum of the file sizes of the corresponding images of the two selected peripheral regions for each retained focused picture, and taking the position corresponding to the focused picture with the largest sum as the second position. 3.根据权利要求1所述的对焦方法，其特征在于：所述决定第二位置的步骤包含：3. The focusing method according to claim 1, wherein the step of determining the second position comprises: 从每一所保留的对焦图片的所述这些外围区域，选取其中两个的对应图文件大小为最小的；以及From said peripheral regions of each of the retained in-focus images, selecting two of which have the smallest corresponding image file size; and 计算每一所保留的对焦图片被选取的所述两个外围区域的对应图文件大小之差，以所述差为最小的对焦图片所对应的位置为第二位置。Calculating the difference in size of corresponding image files of the two selected peripheral regions for each retained focused picture, and taking the position corresponding to the focused picture with the smallest difference as the second position. 4.根据权利要求1所述的对焦方法，其特征在于，更包含：4. The focusing method according to claim 1, further comprising: 将一拍摄参数分别设定于多个不同值，重复执行所述进行对焦程序步骤、所述拍摄对焦图片步骤及所述决定第二位置步骤，以产生所述这些不同值所对应的所述调整步数；以及Setting a shooting parameter to a plurality of different values, repeating the step of performing the focusing procedure, the step of taking a focused picture and the step of determining the second position, so as to generate the adjustments corresponding to the different values steps; and 依据所述拍摄参数与所述这些对应调整步数，调整所述对焦镜片的位置。The position of the focusing lens is adjusted according to the shooting parameters and the corresponding adjustment steps. 5.根据权利要求4所述的对焦方法，其特征在于：所述拍摄参数为镜头段数或拍摄距离。5. The focusing method according to claim 4, wherein the shooting parameter is the number of lens segments or shooting distance. 6.一种镜头对焦步数的调整方法，是用于一数字影像装置中，所述数字影像装置包含一对焦镜片，其特征在于，所述调整方法包含下列步骤：6. A method for adjusting the number of lens focusing steps is used in a digital imaging device, and the digital imaging device includes a focusing lens, wherein the adjustment method comprises the following steps: 进行一对焦程序以决定所述对焦镜片的一第一步数，其中所述第一步数是对应于一最大对比值；performing a focusing process to determine a first step number of the focusing lens, wherein the first step number corresponds to a maximum contrast value; 将所述对焦镜片分别设定于多个不同步数，于每一不同步数各拍摄一对应的对焦图片；对应对焦图片至少划分有一个中心区域和多个外围区域；在拍摄对焦图片时，以一样本图为对象来拍摄；所述样本图是配合对焦图片的划分方式而设计，以确保所划分区域的对应图文件大小一致；所述多个不同步数包括第一步数，且相邻步数的间隔相同；The focusing lens is respectively set at a plurality of different synchronous numbers, and a corresponding focusing picture is taken at each different synchronous number; the corresponding focusing picture is divided into at least one central area and a plurality of peripheral areas; when taking the focusing picture, A sample image is taken as an object; the sample image is designed in conjunction with the division method of the focus image to ensure that the corresponding image files of the divided areas are of the same size; the multiple different synchronization numbers include the first step number, and the corresponding The interval of adjacent steps is the same; 依据所有对焦图片的中心区域的对应图文件大小的最大值，将满足“其中心区域的对应图文件大小相对于所述最大值的百分比值高于一临界值”的对焦图片保留下来，依据所保留的各对焦图片的多个外围区域的对应图文件大小，从所述这些不同步数中决定一第二步数；According to the maximum value of the corresponding image file size of the central area of all focused images, the focused image that satisfies "the percentage value of the corresponding image file size of the central area relative to the maximum value is higher than a critical value" is retained, according to the The size of the corresponding map file of a plurality of peripheral areas of each focused picture is reserved, and a second step number is determined from the different step numbers; 比较所述第一与所述第二步数，以产生一调整步数；以及comparing the first and second step counts to generate an adjusted step count; and 依据所述调整步数调整所述对焦镜片的对焦步数；adjusting the number of focusing steps of the focusing lens according to the number of adjustment steps; 所述第二步数所对应的所述对焦图片的所述中心区域的对应图文件大小相对于所述最大值的一百分比值不低于所述临界值。A percentage value of the corresponding image file size of the central area of the focused image corresponding to the second number of steps relative to the maximum value is not lower than the critical value. 7.根据权利要求6所述的调整方法，其特征在于：所述决定第二步数的步骤包含：7. The adjustment method according to claim 6, characterized in that: the step of determining the second number of steps comprises: 从每一所保留的对焦图片的所述这些外围区域，选取其中两个的对应图文件大小为最小的；及From said peripheral regions of each retained in-focus image, select two of which have the smallest corresponding image file size; and 计算每一所保留的对焦图片被选取的所述两个外围区域的对应图文件大小之和，以所述和为最大的对焦图片对应的步数为第二步数。Calculating the sum of the file sizes of the corresponding images of the two selected peripheral regions for each retained focused picture, and taking the step number corresponding to the focused picture with the largest sum as the second step number. 8.根据权利要求6所述的调整方法，其特征在于：所述决定第二步数的步骤包含：8. The adjustment method according to claim 6, characterized in that: the step of determining the second number of steps comprises: 从每一所保留的对焦图片的所述这些外围区域，选取其中两个的对应图文件大小为最小的；及From said peripheral regions of each retained in-focus image, select two of which have the smallest corresponding image file size; and 计算每一所保留的对焦图片被选取的所述两个外围区域的对应图文件大小之差，以所述差为最小的对焦图片所对应的步数为第二步数。Calculating the difference in file size of the corresponding image files of the two selected peripheral regions for each retained focused picture, and taking the step number corresponding to the focused picture with the smallest difference as the second step number. 9.根据权利要求6所述的调整方法，其特征在于，更包含：依据所述数字影像装置的一拍摄参数的多个不同值，取得所对应的所述调整步数；以及9. The adjustment method according to claim 6, further comprising: obtaining the corresponding number of adjustment steps according to a plurality of different values of a shooting parameter of the digital imaging device; and 依据所述拍摄参数与所述这些对应调整步数，调整所述对焦镜片的对焦步数。The number of focusing steps of the focusing lens is adjusted according to the shooting parameters and the corresponding adjustment steps.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107337A (en) * 1990-07-24 1992-04-21 Matsushita Electric Industrial Co., Ltd. Automatic focusing apparatus of video camera
US6359650B1 (en) * 1994-12-28 2002-03-19 Canon Kabushiki Kaisha Electronic camera having a tilt detection function
CN1417634A (en) * 2001-10-31 2003-05-14 金宝电子工业股份有限公司 Camera autofocus method
US20030117514A1 (en) * 2001-12-21 2003-06-26 Jonathan Weintroub Method and apparatus for detecting optimum lens focus position
US20030223740A1 (en) * 2002-03-22 2003-12-04 Takashi Kajiyama Photographing apparatus
CN1464323A (en) * 2002-06-13 2003-12-31 北京中星微电子有限公司 Process for automatic focusing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107337A (en) * 1990-07-24 1992-04-21 Matsushita Electric Industrial Co., Ltd. Automatic focusing apparatus of video camera
US6359650B1 (en) * 1994-12-28 2002-03-19 Canon Kabushiki Kaisha Electronic camera having a tilt detection function
CN1417634A (en) * 2001-10-31 2003-05-14 金宝电子工业股份有限公司 Camera autofocus method
US20030117514A1 (en) * 2001-12-21 2003-06-26 Jonathan Weintroub Method and apparatus for detecting optimum lens focus position
US20030223740A1 (en) * 2002-03-22 2003-12-04 Takashi Kajiyama Photographing apparatus
CN1464323A (en) * 2002-06-13 2003-12-31 北京中星微电子有限公司 Process for automatic focusing

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